Amplifier



FIG. 1 is a perspective view of an amplifier, showing our new, originaland ornamental design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings are for illustrative purposesonly and form no part of the claimed design.

We claim the ornamental design for an amplifier, as shown and described.